range finding game?

a couple of years ago a buddy of mine showed me a game on a scope manufacturer's website that was a virtual target practice. there was an object of a known size you'd have to use the reticle to determine distance then figure your elevation, factor in given windage and take shots.

i swear it was ATN's website, but can't find it. Anyone know what i'm referring to and know where to find it?

Go here www.ottllc.com/specialtypistols/sp20.pdf and study Item C) Reticle Rangefinding, for a modification of the mil-ranging formula that will allow u to reticle-rangefind with any multi-stadia reticle in any optic u own.

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